linux-kernel - Re: vfs: where is get_sb

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Message-ID: <20110525093308.GA11521@ZenIV.linux.org.uk>
Date:	Wed, 25 May 2011 10:33:08 +0100
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Bob Liu <lliubbo@...il.com>
Cc:	Linux-Kernel <linux-kernel@...r.kernel.org>
Subject: Re: vfs: where is get_sb_single()?

On Wed, May 25, 2011 at 03:19:58PM +0800, Bob Liu wrote:
> Hi, folks
> 
> I found that fs/super.c doesn't have get_sb_single() anymore.
> 
> But I can't find the git log which delete that function.
> Some out of tree file systems depends on that function.

The same out of tree filesystems depend on ->get_sb() being there...
See Documentation/filesystems/porting:

[mandatory]
        ->get_sb() is gone.  Switch to use of ->mount().  Typically it's just
a matter of switching from calling get_sb_... to mount_... and changing the
function type.  If you were doing it manually, just switch from setting ->mnt_root
to some pointer to returning that pointer.  On errors return ERR_PTR(...).

IOW, odds are good that you'll need to do something like what had been
done in commit 152a08366671080f27b32e0c411ad620c5f88b57 - not terribly
complicated.
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